Huest



(No Model.)

. R. W.- WHITEHURST.

ICE CREAM FREEZER.

No. 461,397. Patented Oct. 13, 1891.

WITNESSES? E 7 ZQW @m 2/644. 3M A w 1 I BY OAa/a /3.vww

- ATTORNEY.

UNITE STATES, PATENT OFFICE.'

ROBERT IV. IVHITEHURST, OF NORFOLK, VIRGINIA, ASSIGNOR OF ONE- HALF TO MOD. L. VVRENN, OF SAME PLACE.

ICE-CREAM FREEZER.

- SPECIFICATION forming part of Letters Patent No. 461,397, dated October 13, 1891. Application filed March 12, 1891. Serial No. 384,770. (No model.)

To all whmn it may concern: The end A of the receptacle is closed by Be it known that I, ROBERT W. WVHITE- a lid d, which is hinged to a cross-strip d on HURST, acitizen of the United States, residing top of the said receptacle. At the edge of at Norfolk, in the county of Norfolk and State this cross-stri p, adjacent to the cylinder, is 80- 5 5 of Virginia, have invented certain new and cured an upward-projecting plate 0, which is useful Improvements in Ice-Cream Freezers, the width of the cylinder or drum B and inof which'the following is a specification. clines toward the same. The upper portion This invention relates to an improvement of this plate is curved to conform to the oyin that class of ice-cream freezers in which lindric surface of the drum and is close to the 60 the cream is frozen on the outside surface of latter, as seen in Fig. 1, so that only a very a revolving freezing cylinder or drum connarrow space is allowed between the plate taining' the refrigerant and scraped ofi the and the drum. same as it freezes thereon. When the cream freezes on the surface of The object of the invention is to provide a the drum and is turned out of the receptacle 65 machine wherein the cream is brought to a A, its outer portion is somewhat soft. As it.

more hardened state than heretofore; and passes beneath the inclined plate 0, however, with this end in View the invention consists it will be pressed or packed upon the drum in the features of construction and combinaand frozen hard thereon. Hence the plate tion of parts hereinafter pointed out. O is a compressor or slicker, which packs 7o In the accompanying drawings, illustrating the cream on' the cylindric surface of the the invention, Figure 1 represents a longi-. drum. At the opposite side of the cylinder tudinal section through the center of the maa scraper D is located. It is fastened on the chine; Fig. 2, a top view with the cylinderedge of the receptacle A, incliningtoward the cover removed; Figs. 3 and at, views of the cylinder, and has its upper edge in contact 75 cylinder-cover, and Fig. 5 a detail view 0 with the surface of the latter. This scraper a compressor-plate employed. serves to scrape the frozen cream off the cy- In the drawings, the letter A designates a lindric surface of the drum as the latter rerectangular receptacle, in one 'end of which volves after said cream has passed the comis mounted the revolving freezing-drum B, pressor-plate O and is frozen hard. 8c whose trnnnions a have bearings inthe sides The cylinderB is of metal. Its endsemay, of the receptacle. The lower half of the however, be .exteriorly covered with wood to said drum is contained in the receptacle A, prevent the cream from freezing to the ends and the bottom of the latteris made concave or heads of the drum and allow it to freeze to conform to the cylindric part of the drum, only on the metal cylindrical surface. 85 as shown a't-Z), Fig. 1, and the cylinder works A cover F is provided to fit over the drum,

close to the concave bottom. The bottom 0 and comprises a freezing-chamber G, embracat the opposite end A of the receptacle is ing the upper portion of said drum. This above the concave portion 1) beneath the cover F rests on the receptacle A, and its drum and is inclined down to the said consides h fit over the trunnions a of the drum. 0 4o cave portion 1). This part A of the recep- It has an interior concave surface i, conformtacle serves as a storage reservoir to be filled ing to that of the drum, and there is a space with cream, which flows down the incline to j allowed between this concave surface and the base of the concave bottom I) and fills the the surface of the drum for the cream to pass space around the lower half of the drum. through. As the cream freezes on the cylindric surface The drum is filled through one of its trunof the drum and is taken out by the revolunions a, which is hollow and on the end of tion of the latter, more flows down from the which is a screw-cap a. To the other trunreservoir A until all the cream has been nion is fastened a crank for turning the taken out by the freezing-drum. The cream drum. 50 is thus self-feeding, and all of it is frozen From the foregoing description the operaand no waste is occasioned. tion of the machine will be apparent.- The drum B is filled with ice and salt, as is also the chamber G. Cream is poured in desired quantity into the reservoir A of the receptacle A and flows down around the drum and freezes to the surface of the same. The drum is revolved by means of the crank 70, and the cream which freezes to its cylindrical surface is carried beneath the presser or slicker C,

' ters Patent, is

1. In an ice-cream freezer, the combination of a receptacle for cream, a revolving freezing drum in said receptacle working through the cream contained therein, a compressorplate arranged at one side of the drum and inclined tangentially toward the same to pack the cream on the latter as it revolves, and a scraper to scrape the frozen cream oif the drum after it has passed said compressorplate.

2. In an ice-cream freezer, the combination of a receptacle for cream, a cross-piece at the top of the same, arevolving freezing-drum in said receptacle working through the cream contained therein, a compressor-plate secured to the cross-piece at one side of the drum and having its upper portion curved and inclined toward the drum'to pack the cream on the latter as it revolves, a cover over the upper portion of the drum, a space being left be tween said chamber and the drum, through which the cream passes after being packed by the said compressor-plate, and a scraper to scrape off the frozen cream after it has passed through said freezing-space.

, 3. In an ice-cream freezer, the combination of a receptacle having at one end a concave bottom and at the other a reservoir for cream,

higher than said concave bottom and communicating therewith, and a cross-piece at the top of the receptacle between the. concaved bottom and the reservoir, a revolving freez ing-drum mounted in the end of the said receptacle having the concave bottom and working closeto the latter and through the cream thereon, a lid for the reservoir,hinged to the cross-piece, a removable freezing-chamber over the drum, a compressor secured to the cross-piece, and a scraper to scrape the frozen cream off the drum. y

In testimony whereof I affix my signature in the presence of two witnesses.

ROBERT IV. WHITEHURST'.

Witnesses:

F. D. LOWELL, GEO. D. DEY. 

